<template>
  <div>
    <span v-for="(item, index) in arr" :key="index"
      ><input type="checkbox" v-model="click" :value="item" /> {{ item }}
    </span>
    <p>累加值为:{{ add }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      arr: [9, 15, 19, 25, 29, 31, 48, 57, 62, 79, 87],
      click: [],
    }
  },
  computed: {
    add() {
      return this.click.reduce((sum, click) => {
        return (sum += click)
      }, 0)
    },
  },
}
</script>

<style></style>
